Typewriter carriage control means support



Oct. 7, 1952 e. RREZIOSO 2,612,973

TYPEWRITER :CARRIAGE CONTROL MEANS SUPPORT Fil ed June a, 1949 2 SHEETS.-Si-IEET 1 I/vvE/vTbR Giuseppe Prez ioso.

ATTORNEY Patented Dot. 7, 1 952 xirswstrasoesn C NTRQ MEANS L .spPPoRT i ':JGiuseppe Preziosorqverdony Switzerland, assignor to laillard s. AaSainte-Croix; (:Yaud) ,rSwitzergland a corporation of; Switzerland see intheknown-typewriters, the controllin gtmem hers for the yaifious movements of L the carriage. via, carriage ad ncin s ring th es ap inent ,mechanism for controllin th fiiivancement of the carriage upon the depression of a a the t key r the spee stber.tit e-embas i i e m ha sm th mar n e ite sten for limi them v m nts .e th e r e, line-lock me hen ma he carriag releas anism, the tabulatineacounters qpa dthe rias ak a well by m u t d n di feren machine.

as a ult ther of assem ly isv iemn iseted and very f nth tio edtelem nt ar c ible with gree idlfiioul iesm yth aasep the design ofthemachine'.

The purpose of the present invention is .to remedy these inconveniences byte Assign, in which all the controlling. elements for, the movement of the carriage are,providedon aseparable support attached to the frame pf the typewriter and situatedbehind the c rriage sliderails.

One form of constructio of the embodirnent conforming to the present invention is shown Joy way of example in the accompanyingqdrawing, wherein:

Fig. l is a side elevation of the typewriter, part- 1y sectioned;

Fig. 2 is a perspective view, on a larger scale, of the separable support carrying-the controlling elements for the movement ofthe carriagathis View being takenfrom the inside :ofxthe typewriter.

On thesedravvings the sepanable suppo t hoarries the following elements: a ;;spring assuring in a known manner, pavement; e carriage as the keys are actuatedthis moyement being controlled by an escapeinent 3, the p ion 5 of 1 which engages with th oarriage-rack f fiastened to the carriage 6. r

The support I carries two projections 1 in which a stop 8 is pivoted and may perform a sliding motion against the pressure of a spring 9. This stop element engages with the marginstops it! (Fig. 1) for adjustingthe length of the written line. In order to disengage the right hand margin-stop at the end of the line, the stop 8 is connected with a key of the keyboard controlling a connecting-rod H linked at l2 to an arm it of the stop 8. By operating the key of the keyboard, in the case of the stop 8 being engaged with the right hand margin-stop, the said stop 8 is pivoted between the projections 1 of the support so as to disengage th margin-stop and to permitthe typingl of a certain number-leftisttors.

The carriage t :carries the displaceable stops M onthe tabulator l5. In order to stopthemovement of the carriage in e -positionfixed in-advance, these stops engage with another stop I 6 operated and actuated by a key -11 of the :keyboard. This stop consists of -the extremity of=a sliding member JB Which, when the key -I isloperated, willlprotrude into the-path of the displaceable stops l4 andat thesametime will allow the movement of the carriage. To this eflect a protruding part =35 of the sliding member i 18 acts on one arm or a pivoted bent lever-36,-the

other arm of-which, :by means of its extremity th me /es arr-oscillating support 38 of thecarriage-rack :5 in such a manner as to disengage pinion i. l l i T The extremity 131. of the lever arm :3 6 carries a braking element: inorder to slowdown the movement on the carriage under-theaction of the advancingspring.

On l the other hand, c the t support :I carries the device providedrfor. back-spacing of. the carriage against the action of the =advancing-spring i2. This i device consists of a 1 lever l9 actuated: by a connecting some by means'of a key on the key board. By its action, theescapcment-ttvheel =3- is rotated in .a direction opposite 1 to y the one corresponding; tothe. advancement of-the. carriage 6.

aJIhe keys employed for disengaging the carriage as swell was; for. the .return rrnoveme'ntofthe same, .are provided I on .i the keyeboard, as is :the casewiththekeyll'.

At thet end of the written line, the-stri king of the type+bars 1s prevented by a locking device constituted by an arm 21 it of 31 the oscillating part 22 of: the escapement carrying -the paws- 23.

"The-part2! is operated not only by-the space bar 24 of the keyboard by means of the connecting-rod 25 actuating the lever='26, but alsoby means of the universal rail 21 of the type-bars 28. The rail 21 is fulcrumed at 29 and as on two oscillating levers 3! and. 32, the last mentioned of which is connected to the arm 34 of the oscillating part 22 by means of a rod 33. i

The locking of the escapement at the end of the written line is obtained in the following manner:

While writing, before reaching the end. of the line, the arm 2| oscillates freely at the same time as the oscillatingpart 22 of the escapement. At the end of the line, the right-hand margin-stop engages with stop 8 and moves the same from,

right to left against the pressure of the spring 9.

On the support I is pivoted a lever 39, the protruding part 40 of which, under the action of spring 43, is in contact with a protruding part 41 of the stop 8 and which is also provided with another protruding part 42 intended to intersect the path of arm 2|.

In the course of the movementfrom right to left of the aforementioned stop 8, the protruding part ll liberates the lever 39 which, under the action of the spring 43 oscillates and places its bent extremity 42 in the path of the lever 21, thus blocking the escapement.

On the back face of the support I is fastened a bell 44, the hammer 45 of which is actuated by a projection 46 '(Fig. 1) of the margin-stop 1 position, said lever moving to its predetermined position and-in the path of the arm upon moveagainst the action of spring 41. On its passage,

the projection 46 touches the part 48 of the hammer.

The support may be fastened to the fram'e'of the typewriter by means of ordinary screws. The connection between the support and the frame may be of the resilient type in order to dampen the shocks transmitted from the carriage to the various elements which it carries and to decrease, by this means, the noise.

The placing of all the members controlling the movement of the carriage on a single and movable support fastened in the freely available space of the machine-frame, behind the sliderails of the carriage, results in a great facility for assembling the typewriter.

I claim: 7

1. In a typewriter including a carriage, the combination comprising a stationary frame including slideways for the carriage, a detachable support affixed to the frame behind the slideways, yieldable means mounted on the support and urging the carriage to a predeterminedposition, an escapement mechanism mounted on the support and controlling the advancement of the carriage, a back-spacing mechanism mounted on the support, margin counterstop means mounted on the support and limiting the movement of the carriage, a line lock mechanism mounted on the support, a carriage release mechanism mounted on the support, tabulating counterstop means mounted on the support, carriage brake means mounted on the support and operable simultaneously with the carriage release mechanism, and bell means mounted on the support.

2. The combination according to claim 1 and wherein the carriage release mechanism is operable simultaneously with the operation of the tabulating counterstop means.

3. The combination according to claim 1 and wherein the carriage release mechanism includes an arm and the tabulator counterstop means when operated swings the arm to release the carriage, said arm braking the carriage upon release thereof, 3

4. The combination according to claim 1 and ment of the margin counterstop means by the carriage margin, stop from its predetermined position to thereby lock the escapement mechanism and prevent motion of the carriage.

6.'In a typewriter including a carriage, the combination comprising a, stationary frame, a supporton the frame, yieldable means urging the carriage to a predetermined position and mounted on the support, an escapement mechanism mounted on the support and controlling the advancement of the carriage and including a swingable part carrying an arm, back-spacing mechanism mounted on the support, margin counterstop means mounted on the support and limiting the movement of the carriage and including a stop pivoted to the support and slidably urged to a predetermined position, a line lock mechanism mounted on the support, a carriage release mechanism mounted on the support, tabulating counterstop means mounted on the support, carriage brake means rigid with the carriage release mechanism and mounted on the support, bell means mounted on the support, and a lever fulcrumed on the support and urged to a predetermined position and normally held in a second position by the margin counterstop means when in its predetermined position, said lever moving to its predetermined position and in the path of the arm upon movement by the carriage margin stop of the margin counterstop means from its predetermined position to thereby lock the escapement mechanism and prevent motion of the carriage.

GIUSEPPE PREZIOSO.

REFERENCES CITED The following references are of record in the file of this, patent:

UNITED STATES PATENTS Number Name Date 847,613 Secor Mar. 19, 1907 1,021,641 Stieg Mar. 26, 1912 1,172,016 Etheridge Feb. 15, 1916 1,510,797 Pfau Oct. 7, 1924 1,572,396 Kurowski Feb. 9, 1926 1,623,481 Kurowski Apr. 5, 1927 1,712,623 Kurowski May 14, 1929 

